Year US Dollars 1995 166044302.66778 1996 145534605.29405 1997 141278645.92764 1998 143569223.37068 1999 146178325.93434 2000 158747287.98206 2001 170846223.7805 2002 173948963.86369 2003 175955969.28192 2004 181860774.8289 2005 194743160.12129 2006 201149412.41628 2007 213498217.50315 2008 212425377.4356 2009 209498181.9998 2010 215889032.36601 2011 224872243.11779 2012 224729446.95828 2013 241951857.64449 2014 260602947.78716 2015 285977120.479 2016 284849729.14996 2017 295394021.86841